A novel Hopkinson-based technique for high-speed biaxial testing of sheet metals
| dc.contributor.author | Corallo, L. | |
| dc.contributor.author | Verleysen, P. | |
| dc.date.accessioned | 2022-01-11T15:59:45Z | |
| dc.date.available | 2022-01-11T15:59:45Z | |
| dc.date.issued | 2021-10-15 | |
| dc.description.abstract | Forming processes of sheet metals require knowledge of the material behaviour up to large levels of plastic deformation. To this purpose, biaxial bulge tests are often used. In present paper, a dynamic bulge test is presented. The testing principle relies on conventional split Hopkinson bar testing. Though, as opposed to existing setups, a different positioning of the bars leaves the sample fully accessible for optical measurements. The pressure imposed to a circular sample, together with the sample strain fields, allow to obtain reliable stress-strain data till significantly larger strains compared to tensile tests. The technique is illustrated by tests on an Al2024-T3 sheet. High speed camera imaging of the deforming sample combined with digital image processing is used to obtain full-field strain data. To quantitatively assess the added value of full-field strain measurements, stress-strain curves obtained with and without the strain data are compared. | de |
| dc.identifier.uri | http://hdl.handle.net/2003/40667 | |
| dc.identifier.uri | http://dx.doi.org/10.17877/DE290R-22525 | |
| dc.language.iso | en | |
| dc.relation.ispartof | 9th International Conference on High Speed Forming | en |
| dc.subject | high-speed forming | en |
| dc.subject | high-speed digital imaging | en |
| dc.subject | dynamic biaxial testing | en |
| dc.subject.ddc | 620 | |
| dc.subject.ddc | 670 | |
| dc.title | A novel Hopkinson-based technique for high-speed biaxial testing of sheet metals | en |
| dc.type | Text | |
| dc.type.publicationtype | conferenceObject | |
| dcterms.accessRights | open access | |
| eldorado.secondarypublication | false |